Remove i3 desktop profile and st terminal

Elimina completamente la sessione desktop i3 (X11), ormai non più usata
(gli host espongono solo sway e Hyprland su Wayland):
- ruolo profile_desktop_i3 e voce emptty i3.desktop
- desktop_i3_packages e i guard 'i3' in desktop_sessions_enabled
- desktop_i3_dotfiles e host_i3_dotfiles (autorandr X11)
- dotfiles i3/X11: .xinitrc, i3, i3blocks, picom, polybar, autorandr
- task host-specifici i3 (copy dotfiles, wrap prime-run su nymph)
- rimuove st (terminale X11 da sorgente) da desktop_void_source_tools
- consolida lo script live in scripts/remove_i3.sh, elimina cleanup-i3.sh
- aggiorna la documentazione (README/AGENTS/CLAUDE/knowledge)

Config Emacs lasciata invariata di proposito.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

scripts/cleanup-i3.sh

@@ -1,103 +0,0 @@
-#!/usr/bin/env sh
-# Remove i3 session artifacts: exclusive packages, dotfiles and the emptty
-# xsessions entry. Shared resources with sway (dunst, rofi, alacritty,
-# xfce4-screenshooter) are left untouched.
-
-set -eu
-
-I3_PACKAGES="
-arandr
-autorandr
-feh
-i3
-i3blocks
-i3blocks-blocklets
-i3lock-color
-i3status
-picom
-polybar
-scrot
-setxkbmap
-volumeicon
-xclip
-xfce4-clipman-plugin
-xkbutils
-xorg-fonts
-xorg-minimal
-xss-lock
-xdotool
-"
-
-I3_DOTFILES="
-$HOME/.config/i3
-$HOME/.config/i3blocks
-$HOME/.config/picom
-$HOME/.config/polybar
-$HOME/.xinitrc
-"
-
-EMPTTY_SESSION=/etc/emptty/xsessions/i3.desktop
-
-confirm() {
-  printf '%s [y/N] ' "$1"
-  read -r answer
-  case "$answer" in
-    y|Y|yes|YES) return 0 ;;
-    *) return 1 ;;
-  esac
-}
-
-filter_installed() {
-  for p in $1; do
-    if xbps-query -p pkgver "$p" >/dev/null 2>&1; then
-      printf '%s\n' "$p"
-    fi
-  done
-}
-
-if ! command -v xbps-remove >/dev/null 2>&1; then
-  printf 'Error: xbps-remove not found (not a Void host?)\n' >&2
-  exit 1
-fi
-
-installed=$(filter_installed "$I3_PACKAGES" | tr '\n' ' ' | sed 's/ *$//')
-
-printf '== i3 cleanup ==\n\n'
-printf 'Packages to remove (installed only):\n'
-if [ -n "$installed" ]; then
-  printf '  %s\n' $installed
-else
-  printf '  (none)\n'
-fi
-printf '\nDotfiles to remove:\n'
-for d in $I3_DOTFILES; do
-  if [ -e "$d" ] || [ -L "$d" ]; then
-    printf '  %s\n' "$d"
-  fi
-done
-printf '\nEmptty session entry:\n'
-if [ -e "$EMPTTY_SESSION" ]; then
-  printf '  %s\n' "$EMPTTY_SESSION"
-else
-  printf '  (absent)\n'
-fi
-printf '\nShared (NOT removed): dunst, rofi, alacritty, xfce4-screenshooter and their configs.\n\n'
-
-confirm 'Proceed?' || { printf 'Aborted.\n'; exit 0; }
-
-if [ -n "$installed" ]; then
-  # shellcheck disable=SC2086
-  sudo xbps-remove -Ry $installed
-fi
-
-for d in $I3_DOTFILES; do
-  if [ -e "$d" ] || [ -L "$d" ]; then
-    rm -rf -- "$d"
-  fi
-done
-
-if [ -e "$EMPTTY_SESSION" ]; then
-  sudo rm -f -- "$EMPTTY_SESSION"
-fi
-
-printf '\nDone.\n'

scripts/remove_i3.sh

@@ -1,11 +1,13 @@
 #!/bin/sh
-# Rimuove i3 e relativi dotfiles dall'host corrente.
-# Eseguire dopo aver verificato che sway funzioni correttamente.
+# Rimuove i3 (sessione X11) e relativi artefatti dall'host Void corrente:
+# pacchetti i3-only, dotfiles, voce emptty e profili autorandr host-specifici.
+# Eseguire dopo aver verificato che sway/Hyprland funzionino correttamente.
+# I pacchetti condivisi con sway/Hyprland (dunst, rofi, alacritty) NON vengono rimossi.
 set -e
 
 HOSTNAME=$(hostname)
 
-# Pacchetti i3-only (dunst e rofi sono condivisi con sway, non rimossi)
+# Pacchetti i3-only (X11). dunst/rofi/alacritty sono condivisi e non vengono rimossi.
 sudo xbps-remove -R arandr autorandr feh i3 i3blocks i3blocks-blocklets \
   i3lock-color i3status picom polybar scrot setxkbmap volumeicon xclip \
   xfce4-clipman-plugin xfce4-screenshooter xkbutils xorg-fonts xorg-minimal \
@@ -14,15 +16,15 @@ sudo xbps-remove -R arandr autorandr feh i3 i3blocks i3blocks-blocklets \
 # Dotfiles i3-only
 rm -rf ~/.config/i3 ~/.config/i3blocks
 rm -f  ~/.config/picom/picom.conf
-rmdir  --ignore-fail-on-non-empty ~/.config/picom
+rmdir  --ignore-fail-on-non-empty ~/.config/picom 2>/dev/null || true
 rm -f  ~/.config/polybar/config.ini ~/.config/polybar/launch.sh
-rmdir  --ignore-fail-on-non-empty ~/.config/polybar
+rmdir  --ignore-fail-on-non-empty ~/.config/polybar 2>/dev/null || true
 rm -f  ~/.xinitrc
 
-# Session file emptty
+# Session file emptty (X11)
 sudo rm -f /etc/emptty/xsessions/i3.desktop
 
-# Dotfiles host-specifici
+# Dotfiles host-specifici (autorandr = multi-monitor X11)
 case "$HOSTNAME" in
   ikaros|nymph)
     rm -rf ~/.config/autorandr